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1. 发明专利

JP2001289466A OUTDOOR UNIT OF AIR CONDITIONER 失效
公开(公告)号：JP2001289466A
公开(公告)日：2001-10-19
申请号：JP2000107996
申请日：2000-04-05
申请人： HITACHI LTD
发明人： HAKAMAYA NOBUSUKE , SHIKAZONO NAOKI , FUNABASHI SHIGEHISA , HAMADA SUSUMU , SEKINE YOJI , TAKADA YOSHIHIRO
IPC分类号： F24F5/00
摘要： PROBLEM TO BE SOLVED: To increase air volume and save the power, by improving the static pressure recovery property of a blowout grill with inexpensive constitution, in the outdoor unit of an air conditioner. SOLUTION: A blowout grill 30 is arranged on the side of the blowout of a propeller fan 6, and the blowout grill 30 is the one where a plurality of circular frames 9 made concentrically with a propeller fan 6 and a plurality of radial frames 8 extending radially are made integrally by synthetic resin, and each radial frame 8 is in the shape of a plate which is inclined circularly in cross section in axial direction, and besides it is made wider with the same curvature outside more than at the center in radial direction.

2. 发明专利

JPH1062032A AIR CONDITIONER 失效
公开(公告)号：JPH1062032A
公开(公告)日：1998-03-06
申请号：JP21827696
申请日：1996-08-20
申请人： HITACHI LTD
发明人： KASHIWAKURA TAKESHI , MATSUBARA EISUKE , HAMADA SUSUMU
IPC分类号： F25B29/00 , F25B41/06
摘要： PROBLEM TO BE SOLVED: To reduce the flowing noise of the refrigerant generated in a dehumidifying throttling device during the dehumidification while deterioration of the performance in the cooling operation or heating operation by forming a sub refrigerant flow passage in which the refrigerant is distributed to the dehumidifying throttling device is formed on a valve disk in the vertical direction to provide the gas-liquid separating function of the refrigerant flow. SOLUTION: When a solenoid coil 20 is energized during the dehumidification, a plunger 25 having a valve disk 24 is moved in a valve body 23 by the attraction of a suction element 21 to close a main refrigerant flow passage 27. The refrigerant passes through the high pressure side refrigerant flow passage 31 from a dehumidification control valve inlet piping 32, flows into a sub refrigerant flow passage 28 and a sub refrigerant flow passage 29, enters a sub refrigerant flow passage 30, passes through a low pressure side refrigerant flow passage 33, and flows out of an outlet piping 34. When the sub refrigerant flow passage 30 is vertically opened in the valve disk 24 and the refrigerant flows into the dehumidification control valve in a gas-liquid two-phase flow, the gas refrigerant and the liquid refrigerant flows in an upper layer and a lower layer except the vertical piping respectively, and the gas refrigerant flows in the sub refrigerant flow passage 28 and the liquid refrigerant flows in the sub refrigerant flow passage 29 in a gas-liquid separated manner.

3. 发明专利

JP2002081802A AIR CONDITIONER 失效
公开(公告)号：JP2002081802A
公开(公告)日：2002-03-22
申请号：JP2000278661
申请日：2000-09-08
申请人： HITACHI LTD
发明人： HAMADA SUSUMU , FUKUDA TAKASHI
IPC分类号： F25B13/00 , F25B43/00
摘要： PROBLEM TO BE SOLVED: To reduce size and save a refrigerant through improvement of gas liquid separation performance of a gas liquid separator, in an air conditioner. SOLUTION: The inner lower part of a gas liquid separation chamber 4a is partitioned into first and second space parts by a partition plate 26. A first refrigerant pipe 20 connected to a first pressure reducing device 3 is positioned in a first space part and opened to a bottom wall part. A second refrigerant pipe 21 connected to a second pressure reducing device 5 is positioned in a second space part and opened opposite to the bottom wall part. A third refrigerant pipe 22 connected to injection piping is opened to the upper part of the gas liquid separation chamber 4a, the bottom wall part is formed in a flat plate-form manner separately from a side wall part and fixed approximately at right angles with a wall part on the pipe body side.

4. 发明专利

JP2000065418A AIR CONDITIONER 失效
公开(公告)号：JP2000065418A
公开(公告)日：2000-03-03
申请号：JP23811298
申请日：1998-08-25
申请人： HITACHI LTD
发明人： TAKADA YOSHIHIRO , HAKAMAYA NOBUSUKE , MORIMOTO MOTOO , YOKOYAMA HIDENORI , HAMADA SUSUMU , WADA HIROMI , NAKAGAWA YOJI
IPC分类号： F24F5/00 , F24F1/40 , F24F1/56 , F24F3/06 , F24F13/00 , F24F13/08
摘要： PROBLEM TO BE SOLVED: To decrease a noise between horizontal mutins and to increase a wind volume by bending air upstream side of a sash bar perpendicular to a rotating direction of a fan to meet a discharge angle of the air. SOLUTION: A fan 14 having blades 11 is rotated down. A mouth ring 12 and a diffusing enlarged part 13 are disposed in its air outlet. Further, a curvature guard 5 is disposed at a part in which an advancing direction of the fan perpendicularly crosses a longitudinal direction of flat plate-like horizontal mutins 3 at its downstream. The mutins 3 are disposed above and below the guard 5 (1). Since the air outflow from the fan has an angle α2, a front edge of the guard 5 is formed in a circular arc-like state to meet the outflow angle of the air, and formed axially in a flat plate-like state similar to the mutins. Thus, when the front edge of the guard 5 is formed in the arc-like state, an angle of entering the air matches the front edge of the guard 5. Accordingly, since the air flows to crawl a rear surface of the guard, a flow of the air is not released from the guard (3).

5. 发明专利

JP2000064991A AIR-CONDITIONER 失效
公开(公告)号：JP2000064991A
公开(公告)日：2000-03-03
申请号：JP23811598
申请日：1998-08-25
申请人： HITACHI LTD
发明人： TAKADA YOSHIHIRO , HAKAMAYA NOBUSUKE , YOSHINAGA SHINYA , YOKOYAMA HIDENORI , MORIMOTO MOTOO , HAMADA SUSUMU , MURAYAMA MASAMI , TAKAKU SHOJI
IPC分类号： F04D29/38 , F04D29/66
摘要： PROBLEM TO BE SOLVED: To reduce the generation of noise, to improve strength, and to prevent the occurrence of unevenness in a vane mounting angle by a method wherein the maximum value of the chord length of a propeller fan being the electric fan of a heat-exchange part is positioned at the outer peripheral part of the fan and the fan6 outer peripheral part is protruded to the pressure surface side, and the outer peripheral part is moved backward to the negative pressure surface side. SOLUTION: A propeller fan 5 is formed that vanes 2 are disposed at a boss 1. In this case, since an outer peripheral protrusion part 3 protruding from a pressure surface at the tip of the vane 2 has a given curvature, the protrusion part is moved backward to a negative pressure surface after protrusion. The vane shape of a part wherein a fan outer peripheral end formed that it is moved backward to the negative pressure surface side at an outer peripheral part and a fan front edge cross each other is changed in a manner to protrude toward the pressure surface side. Further, a maximum outside diameter part is arranged further near the front edge side than the central part (, for example, 50% of a chord flare) of the vane. The outside diameter D21 is set to a value, for example, 3% or more higher than an outside diameter D23. This constitution increases an air volume without increasing the generation of noise.

6. 发明专利

JPH1183209A AIR CONDITIONER 失效
公开(公告)号：JPH1183209A
公开(公告)日：1999-03-26
申请号：JP24240497
申请日：1997-09-08
申请人： HITACHI LTD
发明人： MORIMOTO MOTOO , FUJIBAYASHI ICHIRO , HAMADA SUSUMU , IIZUKA YOSHINORI
IPC分类号： F25B1/00
摘要： PROBLEM TO BE SOLVED: To secure the reliability on refrigeration cycle in consequence, by securing the reliability on a compressor even in such a case that a large quantity of a refrigerant returns in a liquid state to the compressor, in an air conditioner using an HFC refrigerant not containing chlorine. SOLUTION: The temperature drop of a compressor 1 is prevented by detecting the temperature of the compressor 1 with a temperature sensor 10 attached to the surface of the compressor 1 and regulating valve travel of an electronic expansion valve so that the surface temperature of the compressor may not fall under the threshold, or providing this air condition with a heater (thermoelectric heater, etc.), 11 for heating the compressor 11, at the surface of the compressor 1, or providing it with a function of applying a current to the motor coil of the compressor 1 during stoppage of the compressor 1, and providing it with a receiver tank 7 having a valve capable of opening and closing, thus heating the compressor 1 or reducing the quantity of return liquid to the compressor 1.

7. 发明专利

JPH04110551A AIR CONDITIONER 失效
公开(公告)号：JPH04110551A
公开(公告)日：1992-04-13
申请号：JP22505090
申请日：1990-08-29
申请人： HITACHI LTD
发明人： TAKAHASHI NORIO , FUKAMI KEIICHI , KANEKO TOMOMICHI , HAMADA SUSUMU
IPC分类号： F24F11/02
摘要： PURPOSE:To shorten a time up to diffusing of hot air even at the time of receiving an operation command during stopping of a compressor by providing temperature detecting means in an indoor heat exchanger and heating means such as an electric heater, etc., and setting the temperature of the exchanger to a value higher than the value obtained by adding the temperature drop of the exchanger due to predetermined time stopping of the compressor and the hot air diffusing temperature. CONSTITUTION:The stopping temperature of a compressor 16 is set to a value higher than the value obtained by adding the temperature drop of an indoor heat exchanger at the stopping time necessary at the of stopping of the compressor and the diffusing temperature of hot air. Since heat accumulation (preheating) operation of a cycle is executed at hot air diffusing temperature or higher, hot air can be immediately diffused at the time of starting of operation of an air conditioner body l. The rotating speed of an indoor fan motor is calculated by a room temperature and a discharge temperature detected an indoor detector 11 and a discharge temperature detector 12. Accordingly, hot air temperature can be held at a predetermined value or higher. Since the hot air diffusing temperature is improved by a heater 14 for a predetermined time even when the operation of an air conditioner body is required during stopping of the compressor, deterioration of comfortableness due to the drop of the hot air diffusing temperature can be prevented.

8. 发明专利

JP2000205593A VENTILATION DEVICE FOR AIR-CONDITIONER 失效
公开(公告)号：JP2000205593A
公开(公告)日：2000-07-25
申请号：JP610599
申请日：1999-01-13
申请人： HITACHI LTD
发明人： HAMADA SUSUMU , INOUE YOSHIMI , YAMADA KUNIYUKI , MORIMOTO MOTOO
IPC分类号： F24F1/00 , F24F1/06 , F24F5/00
摘要： PROBLEM TO BE SOLVED: To perform securing of an arrangement place, namely, securing of an indoor arranging wall to mount a ventilation device, and securing of a wall through-hole through which ventilation air passes. SOLUTION: In this device, by incorporating an air supply means 31 for ventilation in an outdoor machine 2, an arrangement place and appearance are improved, and the air supply means 31 for ventilation is formed into a unit. By bringing this device into structure where it is stuck on the outdoor machine 2 at a side, optional selection is practicable. This constitution causes a conventional structure to suffice for the outdoor machine 2 and copes with a ventilation function demand without damaging a market competition force.

9. 发明专利

JPH06109320A AIR-CONDITIONING MACHINE 失效
公开(公告)号：JPH06109320A
公开(公告)日：1994-04-19
申请号：JP26110492
申请日：1992-09-30
申请人： HITACHI LTD
发明人： HAMADA SUSUMU , OTA YUKIO , YOKOYAMA HIDENORI , KANEKO TOMOMICHI
IPC分类号： F24F13/08
摘要： PURPOSE:To contrive the improvement of incorporating workability and the like by a method wherein a plurality of airflow direction deflecting plates or a plurality of vertical vanes and horizontal vanes, which change the direction of airflow at a discharging port horizontally and vertically respectively, are arranged as airflow direction switching means while the vertical vanes and the discharging frame of the discharging port are integrated. CONSTITUTION:A suction port, equipped with a suction grille 4, and a discharging port, equipped with a discharging frame 7, are formed up-and-down at the front surface of an indoor unit 3. An air flow passage, made by a casing 8, is formed in the indoor unit 3. An indoor heat exchanger 6 is arranged near the suction port while the discharging frame 7 is arranged below the heat exchanger 6. In this case, a plurality of vertical vanes 11, 12 and a plurality of horizontal vanes 13, 14 are arranged respectively at the discharging unit of the air flow passage. The direction of discharging air is regulated by the vertical vanes 11 by manual regulation while the vertical vanes 12 are integrated with the discharging frame. On the other hand, the up-and-down direction of the discharging air is controlled automatically by respective horizontal vanes 13, 14 while the pivotal shafts of these vanes are connected to an airflow direction deflecting plate motor.

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